function [ sym ] = symmetries( index )

sym = [ ...
  {'-1    triclinic'}; ...
  {'2/m   monoclinic'};...
  {'mmm   orthorhombic'};...
  {'4/m   tetragonal'};...
  {'4/mmm tetragonal'};...
  {'-3    trigonal'};...
  {'-3m   trigonal'};...
  {'6/m   hexagonal'};...
  {'6/mmm hexagonal'};...
  {'m-3   cubic'};...
  {'m-3m  cubic'}];

if nargin > 0 
   sym = sym( index );
end
